Receiving compensation apparatus for airborne transient electromagnetic method

Abstract

This application relates to a receiving compensation apparatus for an airborne transient electromagnetic method. The receiving compensation apparatus for the airborne transient electromagnetic method in this application includes a received coil, a transmitting coil, compensation coils, and at least one compensation magnetic core, where the transmitting coil is disposed on the periphery of the received coil, the compensation magnetic core is disposed on the transmitting coil, and the compensation coils are disposed on the compensation magnetic core.

What is claimed is: 
     
         1 . A receiving compensation apparatus for an airborne transient electromagnetic method, comprising a received coil, a transmitting coil, and compensation coils, wherein the transmitting coil is disposed on the periphery of the received coil, the receiving compensation apparatus further comprises at least one compensation magnetic core, the compensation magnetic core is disposed on the transmitting coil, and the compensation coils are disposed on the compensation magnetic core. 
     
     
         2 . The receiving compensation apparatus for the airborne transient electromagnetic method according to  claim 1 , wherein the transmitting coil and the received coil are on a concentric circle. 
     
     
         3 . The receiving compensation apparatus for the airborne transient electromagnetic method according to  claim 1 , wherein the compensation magnetic core is a magnetic ring, and the compensation magnetic core is sleeved on the transmitting coil. 
     
     
         4 . The receiving compensation apparatus for the airborne transient electromagnetic method according to  claim 2 , wherein the compensation magnetic core is a magnetic ring, and the compensation magnetic core is sleeved on the transmitting coil. 
     
     
         5 . The receiving compensation apparatus for the airborne transient electromagnetic method according to  claim 3 , wherein the compensation magnetic core abuts on the periphery of the transmitting coil, or the compensation magnetic core is separated from the transmitting coil by a specific gap. 
     
     
         6 . The receiving compensation apparatus for the airborne transient electromagnetic method according to  claim 4 , wherein the compensation magnetic core abuts on the periphery of the transmitting coil, or the compensation magnetic core is separated from the transmitting coil by a specific gap. 
     
     
         7 . The receiving compensation apparatus for the airborne transient electromagnetic method according to  claim 1 , wherein a signal neutralization method for the compensation coil and the received coil is that the compensation coil and the received coil respectively process two signals and neutralize the two signals by using an addition/subtraction circuit. 
     
     
         8 . The receiving compensation apparatus for the airborne transient electromagnetic method according to  claim 2 , wherein a signal neutralization method for the compensation coil and the received coil is that the compensation coil and the received coil respectively process two signals and neutralize the two signals by using an addition/subtraction circuit. 
     
     
         9 . The receiving compensation apparatus for the airborne transient electromagnetic method according to  claim 1 , wherein a neutralization method for the compensation coil and the received coil is that the received coil and the compensation coil are connected into a loop to implement direct neutralization of signals of a primary field. 
     
     
         10 . The receiving compensation apparatus for the airborne transient electromagnetic method according to  claim 2 , wherein a neutralization method for the compensation coil and the received coil is that the received coil and the compensation coil are connected into a loop to implement direct neutralization of signals of a primary field. 
     
     
         11 . The receiving compensation apparatus for the airborne transient electromagnetic method according to  claim 1 , further comprising a shielded twisted pair, wherein the shielded twisted pair is disposed between the transmitting coil and the compensation coil, and the shielded twisted pair connects the received coil to the compensation coil. 
     
     
         12 . The receiving compensation apparatus for the airborne transient electromagnetic method according to  claim 2 , further comprising a shielded twisted pair, wherein the shielded twisted pair is disposed between the transmitting coil and the compensation coil, and the shielded twisted pair connects the transmitting coil to the compensation coil. 
     
     
         13 . The receiving compensation apparatus for the airborne transient electromagnetic method according to  claim 1 , wherein the compensation coils disposed on the compensation magnetic core are evenly wound. 
     
     
         14 . The receiving compensation apparatus for the airborne transient electromagnetic method according to  claim 2 , wherein the compensation coils disposed on the compensation magnetic core are evenly wound. 
     
     
         15 . The receiving compensation apparatus for the airborne transient electromagnetic method according to  claim 1 , wherein the at least one compensation magnetic core is connected by using a wire. 
     
     
         16 . The receiving compensation apparatus for the airborne transient electromagnetic method according to  claim 2 , wherein the at least one compensation magnetic core is connected by using a wire.